Furnace.



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No. 835,409. PATENTED NOV. 6, 1906.

G. DILLON.

FURNACE.

APPLICATION FILED DECLZO, 1905.

2 SHEETSSHEET 2.

INVENTOR,

A TTOHNEY Geogefla lloro,

GEORGE DILLON, OF BROOKLYN, NEW YORK.

FURNACE.

Specification of Letters Patent.

Patented Nov. 6, 1906.

Appli ation med December 20, 1905. Serial No. 292,649.

To all whom it may concern:

Be it known that I, GEORGE DILLON, a citizen of the United States, residing at Greengomt, Brooklyn, in the county of Kings and tate of New York, have invented new and useful Improvements in Furnaces, of which the following is a specification.

This invention relates generally to furnaces, and particularly to a devicefor removing soot, cinders, and other deposits from the bed of a furnace.

It is Well known to those skilled in the art to which this invention relates that the back connections of furnaces employing either natural or artificial draft quickly become clo ged with soot, which seriously interferes Wit the draft and otherwise retards the proper working of the furnace. Heretofore it has been customary to remove the soot from the back connections of a furnace by opening a suitable door and inserting a rake or scraping device by means of which the soot is drawn out of the furnace. This operation is often difficult when a number of furnaces areplaced closely to ether. Furthermore, it consumes considera le time, not only while the fireman is withdrawing the soot, but also while such soot is being carried away from the furnace in a wheelbarrow or the like.

In carrying out my invention I connect with the bed of a furnace a suitable suction device, which can'be put in o eration after a quantity of soot or other eposit has collected on the bed of the furnace and is in need of removal. Where a number of furnaces are closely arranged with res ect to each other, I rovide a common ischarge-pipe with whic the suction device of each furnace communicates, so that the deposit or soot from a large number of furnaces may be simultaneously removed and conducted to any suitable oint outside the furnace-room.

In ord er that my invention may be more clearly understood, it will be articularly dedescribed with reference to t e accompanying drawings, forming part of this specification, in which Figure 1 is a vertical section, partly in elevation, through a furnace equipped with a cleaning device constructed in accordance with the present invention. Fig. 2 is a horizontal section through the furnace adjacent to the lower portion thereof. Fig. 3 is a perspective view showing one of the suction devices. Fig. 4 is a plan view showing a plurality of suction devices communicating with a common dischargeipe. Fig. 5 is a plan view indicating four f urnaces, each having a discharge or a suction device communicating with-a common discharge-pipe. Fig. 6 is a detail view in side elevation, showing a convenient means of maintaining a draft in the common discharge-pipe. Fig. 7 is a transverse section through the construotion illustrated in Fig. 6.

While I have illustrated in the drawings one particular kind of furnace in connection with which my invention is adapted to be' boiler-tubes; 6 and 7, the o positel -extend-' ing baflle-plates; 8, the bed of the ack connections; 9, the flue, and 10 the boiler. All these parts may be of any suitable form and construction.

previously intimated, my invention consists in the employment of a suitable suction device for wlthdrawing soot, cinders, or

other deposits from the bed of the furnace.

In using the Word bed in the following claims I desire to be understood as meaning any portion of the furnace where soot, cinders, or other deposits collectsuch, for example, as the lowerportion of the furnacebeneath the fire-box or the lower portion of the furnace beneath the boiler-tubes in what is commonly known as the back connections of the furnace.

The bed of the furnace, either beneath the fire-box, or in the. back connections is formed so that it slopes downward toward a contrally-depressed portion, in which is formed an opening 12, which is intended to be closed normally by means of a slidin door 13, movable in ooved guides 13* an operated by a hand e 14.. Communicating with the opening 12 is a pipe 15, into which extends a steam-injector 17. The pipe 15 is cut away to form a receiving-trough 15*, located below the 0 ening 12 and supporting the guides 13', and may lead to any suitable oint outside the furnace, and Where a number of furnaces are arranged close together each'of the pipes 15 may enter into a common discharge-pipe 18, in which a force-draft 2 scenes may be maintained by means of steam-injectors 20, provided with controlling-valves 20 and arran ed to discharge steam in an inclined direction into the pipe 18. If desired, the inclined steam-injectors 21 (shown in Fig. 6) may communicate with an annular steam-pipe 22, with which communicates a steam-supply pipe 23, having one or more controlling-valves 23, An arrangement of steam-injectors such as shown in Fig. 6 is convenient, in that it does not place any obstruction in the common discharge-pipe 18 against which the soot might impinge.

construction such as shown in Fig. 6 may be employed in each of the pi es 15, if so desired, instead of using a sing e steam-injector 17, which projects into the center of the pipe, as shown.

While I have shown in Figs. 1 and 2 a fur nace having a lurality of-suction devices in its bed, it will he apparent that a greater or lesser number of such devices may be employed, if desired.

hrom the foregoing description it will be apparent that one or more furnaces can be guickly freed of soot or other objectionable epo'sits which cannot be readily conveyed to any desired point away from the furnaceroom.

As shown in Fig, 2, a cross bar or rack 25 ma 7 he journaled in the walls of the ash-pit an be provided with rake arms or fingers 26. At its outer end the shaft may be also provided with an operating-handle, and in case of soot and ashes becoming clogged over the o 'ening 12 or in the beds 8 b agitating this s aft 25 and its arms the eposit maybe loosened and more readily carried OR by the means above described.

Having thus described the invention, what is claimed as new is 1. A furnace having a soot-collecting bed inclined from all sides to a depressed outlet, 2; discharge-pipe disposed below the bed and communicating therewith throu h said outlet, guides mounted upon sai dischargepipe, a door slidably mounted in said guides and controlling the outlet, said door being provided with an operating device extending to the exterior of the furnace, and a blastconductor connecting with said dischargepipe.

2. A furnace having a soot-collecting bed inclined from all sides to a depressed outlet, a discharge-pipe cut away to form a trough arranged below the outlet, guides mounted upon said trough, a door controlling the outletand mounted for sliding movement in said 'uides transversely of the trough, said door eing provided with an o crating device extending to the exterior o the furnace, and a blast-pipe arranged to discharge into said discharge-pipe. I v I ,3. A furnace having a bed provided with sloping walls leading to an outlet, a discharge-pipe disposed below the bed and cut away to form a trough located below the outlet, guides supported upon s'aid trough, a sliding door mounted in said guides and controlling the outlet, means for operating the door from the exterior of the furnace, and a blast-conductor extending into the discharge- 4. Afurnace-cleaning s stem comprising a plurality of furnaces, eao having a bed provided with a discharge-opening, a main discharge-pipe common to all of said furnaces, auxiliary dischar e-pipes leading from the respective beds 0 p the furnaces to said main discharge -pipe, doors controlling the dischargempenings, and blast-pipes from the several furnaces arranged to discharge a plurality of jets into the main discharge-pipe.

5. A steam-boiler furnace having a sootcollecting bed inclined from all sides to a depressed ou'tlet, a discharge-pipe out away to form a trough arranged below the outlet, a sliding door for normally closing the outlet, said door being provided with an operating device extending to the exterior of the furmace, and a blast-pipe arranged to discharge a jet of steam from the boiler into the dischar e-pipe to create a vacuum therein, said pipeieing provided with a controlling-valve. In testimony whereof I have aflixed my signature in presence of two witnesses.

GEORGE DILLON. Witnesses:

JOHN J. MooNnY, HERMAN SCHLIEMAN'N. 

